28532375 has 32 divisors (see below), whose sum is σ = 39087360. Its totient is φ = 20697600.

The previous prime is 28532363. The next prime is 28532381. The reversal of 28532375 is 57323582.

It is not a de Polignac number, because 28532375 - 2⁴ = 28532359 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61394 + ... + 61856.

It is an arithmetic number, because the mean of its divisors is an integer number (1221480).

Almost surely, 2^28532375 is an apocalyptic number.

28532375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28532375 is a deficient number, since it is larger than the sum of its proper divisors (10554985).

28532375 is a wasteful number, since it uses less digits than its factorization.

28532375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524 (or 514 counting only the distinct ones).

The product of its digits is 50400, while the sum is 35.

The square root of 28532375 is about 5341.5704619522. The cubic root of 28532375 is about 305.5713557792.

The spelling of 28532375 in words is "twenty-eight million, five hundred thirty-two thousand, three hundred seventy-five".